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        <title>RecordRTC WAV to ACC using ffmpeg-asm.js</title>
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        <article>
            <header style="text-align: center;">
                <h1>
                    <a href="https://www.webrtc-experiment.com/RecordRTC/">RecordRTC</a> WAV to ACC using <a href="http://bgrins.github.io/videoconverter.js/">ffmpeg-asm.js</a>!
                </h1>
                <p>
                    <a href="https://www.webrtc-experiment.com/ffmpeg/">HOME</a>
                    <span> &copy; </span>
                    <a href="http://www.MuazKhan.com/" target="_blank">Muaz Khan</a>

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            <div class="github-stargazers"></div>

            <section class="experiment">
                <h2 class="header">Logs</h2>
                <ol id="logs-preview">
                    <li>
                        <a href="https://www.webrtc-experiment.com/RecordRTC/">RecordRTC</a> experiment converting WAV to ACC inside the browser!
                    </li>
                </ol>
            </section>

            <section class="experiment">
                <h2 class="header">Record Audio and convert into "ACC" using <a href="https://archive.org/download/ffmpeg_asm/ffmpeg_asm.js" download="ffmpeg-asm.js">ffmpeg-asm.js</a>!</h2>

                <div class="inner">
                    <audio id="audio-preview" controls muted></audio>
                    <br>
                    <button id="record-audio">Record</button>
                    <button id="stop-recording-audio" disabled>Stop</button>
                    <br>
                </div>
            </section>
            <script>
                var recordAudio;
                var audioPreview = document.getElementById('audio-preview');
                var inner = document.querySelector('.inner');

                document.querySelector('#record-audio').onclick = function() {
                    this.disabled = true;
                    navigator.getUserMedia({
                            audio: true
                        }, function(stream) {
                            audioPreview.srcObject = stream;
                            audioPreview.play();

                            recordAudio = RecordRTC(stream, {
                                bufferSize: 16384,
                                recorderType: StereoAudioRecorder
                            });

                            recordAudio.startRecording();
                        }, function(error) { throw error;});
                    document.querySelector('#stop-recording-audio').disabled = false;
                };

                document.querySelector('#stop-recording-audio').onclick = function() {
                    this.disabled = true;

                    recordAudio.stopRecording(function(url) {
                        if(!!navigator.mozGetUserMedia) { // remove this if-block if you still want to use ffmpeg-asm.js in Firefox.
                            log('We do not need to use ffmpeg-asm.js in Firefox.');
                            log('If you are still interested to use ffmpeg-asm.js in Firefox then set <a href="https://github.com/muaz-khan/RecordRTC#recordertype">this recorderType</a> parameter.');
                            log('E.g. <code>recordAudio = RecordRTC(stream, { recordertype: StereoAudioRecorder });</code>');

                            var blob = new File([recordAudio.blob], 'test.mp3', {
                                type:' audio/mp3'
                            });
                            audioPreview.src = URL.createObjectURL(blob);
                            audioPreview.download = 'Orignal.mp3';

                            PostBlob(blob);
                            return;
                        }

                        audioPreview.src = url;
                        audioPreview.download = 'Orignal.wav';

                        log('<a href="'+ workerPath +'" download="ffmpeg-asm.js">ffmpeg-asm.js</a> file download started. It is about 18MB in size; please be patient!');
                        convertStreams(recordAudio.getBlob());
                    });
                };

                var workerPath = 'https://archive.org/download/ffmpeg_asm/ffmpeg_asm.js';
				if(document.domain == 'localhost') {
					workerPath = location.href.replace(location.href.split('/').pop(), '') + 'ffmpeg_asm.js';
				}

                function processInWebWorker() {
                    var blob = URL.createObjectURL(new Blob(['importScripts("' + workerPath + '");var now = Date.now;function print(text) {postMessage({"type" : "stdout","data" : text});};onmessage = function(event) {var message = event.data;if (message.type === "command") {var Module = {print: print,printErr: print,files: message.files || [],arguments: message.arguments || [],TOTAL_MEMORY: message.TOTAL_MEMORY || false};postMessage({"type" : "start","data" : Module.arguments.join(" ")});postMessage({"type" : "stdout","data" : "Received command: " +Module.arguments.join(" ") +((Module.TOTAL_MEMORY) ? ".  Processing with " + Module.TOTAL_MEMORY + " bits." : "")});var time = now();var result = ffmpeg_run(Module);var totalTime = now() - time;postMessage({"type" : "stdout","data" : "Finished processing (took " + totalTime + "ms)"});postMessage({"type" : "done","data" : result,"time" : totalTime});}};postMessage({"type" : "ready"});'], {
                        type: 'application/javascript'
                    }));

                    var worker = new Worker(blob);
                    URL.revokeObjectURL(blob);
                    return worker;
                }

                var worker;

                function convertStreams(audioBlob) {
                    var aab;
                    var buffersReady;
                    var workerReady;
                    var posted;

                    var fileReader = new FileReader();
                    fileReader.onload = function() {
                        aab = this.result;
                        postMessage();
                    };
                    fileReader.readAsArrayBuffer(audioBlob);

                    if (!worker) {
                        worker = processInWebWorker();
                    }

                    worker.onmessage = function(event) {
                        var message = event.data;
                        if (message.type == "ready") {
                            log('<a href="'+ workerPath +'" download="ffmpeg-asm.js">ffmpeg-asm.js</a> file has been loaded.');

                            workerReady = true;
                            if (buffersReady)
                                postMessage();
                        } else if (message.type == "stdout") {
                            log(message.data);
                        } else if (message.type == "start") {
                            log('<a href="'+ workerPath +'" download="ffmpeg-asm.js">ffmpeg-asm.js</a> file received ffmpeg command.');
                        } else if (message.type == "done") {
                            log(JSON.stringify(message));

                            var result = message.data[0];
                            log(JSON.stringify(result));

                            var blob = new File([result.data], 'test.mp3', {
                                type: 'audio/mp3'
                            });

                            log(JSON.stringify(blob));

                            PostBlob(blob);
                        }
                    };
                    var postMessage = function() {
                        posted = true;

                        worker.postMessage({
                            type: 'command',
                            arguments: '',
                            arguments: '-i audio.wav -c:a aac -b:a 96k -strict experimental output.mp4'.split(' '),
                            files: [
                                {
                                    data: new Uint8Array(aab),
                                    name: "audio.wav"
                                }
                            ]
                        });
                    };
                }

                function PostBlob(blob) {
                    var audio = document.createElement('audio');
                    audio.controls = true;

                    var source = document.createElement('source');
                    source.src = URL.createObjectURL(blob);
                    source.type = 'audio/mp3; codecs=aac';
                    audio.appendChild(source);

                    audio.download = 'Converted Audio.mp3';

                    inner.appendChild(document.createElement('hr'));
                    var h2 = document.createElement('h2');
                    h2.innerHTML = '<a href="' + source.src + '" target="_blank" download="Converted Audio.mp3" style="font-size:200%;color:red;">Download Converted AAC:</a>';
                    inner.appendChild(h2);
                    h2.style.display = 'block';
                    inner.appendChild(audio);

                    audio.tabIndex = 0;
                    audio.focus();
                    audio.play();

                    document.querySelector('#record-audio').disabled = false;
                }

                var logsPreview = document.getElementById('logs-preview');

                function log(message) {
                    var li = document.createElement('li');
                    li.innerHTML = message;
                    logsPreview.appendChild(li);

                    li.tabIndex = 0;
                    li.focus();
                }

                window.onbeforeunload = function() {
                    document.querySelector('#record-audio').disabled = false;
                };
            </script>

            <section class="experiment own-widgets">
                <h2 class="header" id="updates" style="color: red; padding-bottom: .1em;"><a href="https://github.com/muaz-khan/Ffmpeg.js/issues" target="_blank">Ffmpeg.js Issues</a>
                </h2>
                <div id="github-issues"></div>
            </section>

            <section class="experiment">
                <h2 class="header" id="feedback">Feedback</h2>
                <div>
                    <textarea id="message" style="border: 1px solid rgb(189, 189, 189); height: 8em; margin: .2em; outline: none; resize: vertical; width: 98%;" placeholder="Have any message? Suggestions or something went wrong?"></textarea>
                </div>
                <button id="send-message" style="font-size: 1em;">Send Message</button><small style="margin-left: 1em;">Enter your email too; if you want "direct" reply!</small>
            </section>


            <section class="experiment">
                <h2 class="header">Using ffmpeg-asm.js...</h2>
                <ol>
                    <li>
                        WebM can be converted in mp4.
                    </li>
                    <li>
                        WAV can be converted in ogg or mp3 (AAC/Vorbis).
                    </li>
                    <li>
                        WAV can be merged in mp4.
                    </li>
                </ol>
                <p style="margin-top: 0;">
                    If WAV or WebM is 5MB in size; ogg, mp3 or mp4 will be 700kb!
                </p>
            </section>

            <section class="experiment">
                <p style="margin-top: 0;">
                    Ffmpeg.js is MIT licensed on Github! <a href="https://github.com/muaz-khan/Ffmpeg.js" target="_blank">Documentation</a>
                </p>
            </section>

            <section class="experiment own-widgets latest-commits">
                <h2 class="header" id="updates" style="color: red; padding-bottom: .1em;"><a href="https://github.com/muaz-khan/Ffmpeg.js/commits/master" target="_blank">Latest Updates</a></h2>
                <div id="github-commits"></div>
            </section>
        </article>

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